.banner{
    width: 100%;
    height: auto;
    overflow: hidden;
}
.banner img{
    width: 100%;
}
.dianLiang{
    width: 100%;
    height: auto;
    overflow: hidden;
    background-color: #fff;

}
.dianLiang .a_icon {
    display: block;
    float: left;
    width: 25%;
    text-align: center;
    margin-bottom: 10px;
    margin-top: 10px;
}

.a_icon span {
    display: block;
    font-size: 0.24rem;
}
.a_icon img {
    width: 0.9rem;
    height: 0.9rem;
}